<!DOCTYPE html>
<html>
<head lang="en">
  <meta charset="UTF-8">
  <title></title>
  <meta name="renderer" content="webkit">
  <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
  <link rel="shortcut icon" href="favicon.ico"/>
  <link rel="stylesheet" href="main.css">
</head>
<body>
  <button id="btn1" class="btn btn-primary btn-lg">hello world</button>
  <script type="text/javascript" src="js/lib/jquery.js"></script>
  <script>
    $('#btn1').click(function(){
        window.open('http://www.baidu.com', '_blank');
    });
  </script>
</body>
</html>